Bromochloromethane
Four Way Special Utility District
Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | 0.345 ppb | 4 | 1 | ND - 1.38 ppb |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromochloromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-08 | Q1809770011 | ND |
| 2018-03-08 | Q1809770013 | ND |
| 2018-03-08 | Q1809770015 | ND |
| 2018-03-08 | Q1809770010 | ND |
| 2019-06-04 | Q1931189005 | ND |
| 2019-06-04 | Q1931189007 | ND |
| 2019-06-04 | Q1931189009 | ND |
| 2019-06-04 | Q1931189011 | ND |
| 2020-06-17 | Q2024644004 | ND |
| 2020-08-11 | Q2031797007 | ND |
| 2020-08-11 | Q2031797009 | ND |
| 2020-08-11 | Q2031797011 | ND |
| 2021-06-02 | Q2114209004 | ND |
| 2021-06-02 | Q2114209010 | ND |
| 2021-06-02 | Q2114209008 | ND |
| 2021-06-02 | Q2114209006 | ND |
| 2022-03-07 | Q2207619008 | 1.38 ppb |
| 2022-03-07 | Q2207619010 | ND |
| 2022-03-07 | Q2207619012 | ND |
| 2022-03-07 | Q2207619014 | ND |
| 2023-04-24 | Q2315229004 | ND |
| 2023-06-05 | Q2320826020 | ND |
| 2023-06-05 | Q2320826022 | ND |
| 2023-06-05 | Q2320826024 | ND |